Home / 81,928.60-113,003.18-54,690.96

Finding the Fourth Proportional to 81,928.60, 113,003.18 and 54,690.96

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Solution

The fourth proportional to 81,928.60, 113,003.18 and 54,690.96 is: 75,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,928.60 : 113,003.18 = 54,690.96 : x
  2. Step 2: Convert to fraction form
    81,928.60/113,003.18 = 54,690.96/x
  3. Step 3: Cross multiply
    81,928.60x = 113,003.18 × 54,690.96
  4. Step 4: Simplify right side
    81,928.60x = 6,180,252,397.25
  5. Step 5: Solve for x
    x = 6,180,252,397.25/81,928.60
  6. Step 6: Final answer
    x = 75,434.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.